Holster



FIG. 1 is a perspective view of a holster showing our new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a perspective view thereof; and,

FIG. 4 is a perspective view thereof.

Broken lines shown in the drawings illustrate structure and/or features which form no part of the claimed design. 

CLAIM I claim the ornamental design for a holster, as shown and described. 